EXPERTS IN ENERGY AND DRYING · the grate-firing of chipped biomass products such as waste wood or bark. Steam-heated or hot water-heated tube bundle dryers can also be used in combination

DRYING SYSTEMS BURNERS ENERGY SYSTEMS

EXPERTS IN ENERGY AND DRYING

WWW.BUETTNER-ENERGY-DRYER.COM

2 BÜTTNER EXPERTS IN ENERGY AND DRYING WWW.BUETTNER-ENERGY-DRYER.COM 3

WELCOME TO BÜTTNER

DRYING TECHNOLOGY, BURNERS AND ENERGY SYSTEMS FOR THE GLOBAL MARKET

Since its foundation by August Büttner in 1874 in Krefeld, BÜTTNER

Energie- und Trocknungstechnik GmbH has looked back on a remark-

able long tradition. Today BÜTTNER is the leading international

supplier of complete plants in the field of heat generation and drying

technology.

BÜTTNER assumes responsibility for engineering, supply and installation as well as the commissioning and after-sales service of plants for industri-al clients around the world at the highest technical level. Quality, reliability and efficiency are of paramount importance.

The committed team of engineers and service staff supports its customers worldwide over the entire lifecycle of plants and also takes on modernisation, renovation, performance upgrades and services for existing energy and drying systems as well as burners of all types.

The combination of innovation and expertise is the basis of our success.

Benefits for our customers:

Drying systems for numerous types of bulk solids and fibres

Energy systems including thermal oil heaters and steam generators

for the utilisation of biomass, dust and primary fuels

Energy systems in combination with power generation

Multi-fuel burners or combination burners for dust, gas and oil

Gas line burners

Engineering, delivery, transport, assembly, commissioning

and after-sales service

Modernisation and performance optimisation for plants

and burners of all brands

BÜTTNER is a company of the Siempelkamp Group.


SERVICES40 Installation and commissioning41 Inspection and modernisation42 Spare parts

CONTACT42 Site and service addresses

APPLICATIONS06 Wood fibres for MDF and insulation board07 Strands for OSB08 Biomass for energy recovery09 Wood flakes for particle boards10 Flakes for the production of wood pellets11 Drying of bulk solids12 Sugar beet pulp for production of fodder

ENERGY STYSTEMS26 Grate-firing systems27 MDF process28 Steam generators30 Thermal oil heaters31 Particle board or OSB process

DRYING SYSTEMS16 Directly heated drum dryers

18 Indirectly heated drum dryers

19 Indirectly heated tube bundle dryers

20 Flash tube dryers

BURNERS34 Multi-fuel burners 36 Gas line burners

OVERVIEW



APPLICATIONS

The different dryer systems, the range of burners and the BÜTTNER energy systems are always used with the aim of drying industrial goods or provid-ing process heat. MDF boards from wood fibres, OSB boards from strands or particle boards are just three examples from the wood processing industry of where BÜTTNER systems are used. The fibres for wood fibre insulation boards used in home construction as well as the flakes for the increasingly popular wood pellets also first have to go through an industri-al drying process.

Outside of the pure wood industry, bulk solids, animal feed from sugar production, chemicals and biomass products must also be efficiently dried before they can be used.

The dryer systems, burners and energy systems from BÜTTNER have earned their place on the market for all of these areas of application.

Find out more about the individual applications

on the following pages.

APPLICATIONS


WOOD FIBRES FOR MDF AND INSULATION BOARD

DRIED EFFICIENTLY IN BÜTTNER FLASH TUBE DRYERS

A preferred material for furniture, flooring or ceiling

panelling: medium-density fibreboards (MDF) are

in use around the world. Their quality depends on

proper production. BÜTTNER supplies the wood-based

panels industry with energy systems, drying systems

and burners, which ensure that wood fibres are quick-

ly and efficiently dried, before they are pressed.

Medium-density fibreboards (MDF) and high-density fibreboards (HDF) are made of wood fibres and charac-terised by their particularly homogeneous structure. This allows the edges to be machined directly as well as a direct painting process. MDF is utilised in both furniture construction and in the production of laminate flooring or ceiling panelling.

The interaction between energy system and drying system gives rise to particular requirements:

The energy system must provide for three or more heat consumers acting partially independently from one another. Waste material from production as well as biomass, oil and gas is burned for this purpose. A sophis-ticated control concept helps to provide a constant supply of heat to all consumers.

The wood fibres are dried in a few seconds in the flash tube dryer; as a result very little time remains to compen-sate for variations in the drying process with the fast control system.

BÜTTNER'S decades of experience constructing energy and drying systems guarantees trouble-free and opti-mally coordinated plant operation.

APPLICATIONS


Once called wafer boards, everyone has heard of the

OSB boards used in construction and packaging; long,

thin f lakes (strands) from debarked logs are layered

and then pressed into large boards. The wood-based

panel industry's modern, highly-efficient presses

require a source material which exhibits a permanent

uniform degree of moisture.

This is where BÜTTNER comes in:

Our single-pass drum dryers, which are heated with flue gas, ensure that both thick and thin strands always have the proper moisture content. BÜTTNER'S energy and drying systems allow for the precise pre-treatment and drying of the wood material; this ensures that the OSB boards are always of the same high-quality. The entire process is precisely modulated and monitored.

The flue gas required for heating the dryer is generated either in the grate firing system or in special combustion chambers with multi-fuel burners. Manufacturing wastes, for example bark, screening and waste material from board production, are used as fuel. Under certain conditions primary fuels such as oil or natural gas can also be utilised.

At large factories an energy system must often provide for two or more heat consumers acting partially inde-pendently from one another. BÜTTNER'S sophisticated control concept for energy systems helps to provide a constant supply of heat to all consumers.

BÜTTNER'S single-pass drum dryers make a significant difference to the quality of the finished OSB boards. With an efficient and reliable drying process, they allow for optimal, smooth production processes in the wood industry. And all of this globally.

STRANDS FOR OSB

DRYING OSB STRANDS WITH BÜTTNER SINGLE-PASS DRUM DRYERS

APPLICATIONS


BIOMASS FOR ENERGY RECOVERY

BÜTTNER DRYING SYSTEMS AND ENERGY SYSTEMS, A COMBINED SOLUTION

The utilisation of renewable raw materials is attracting

ever more attention and the application of biomass as

a fuel is now commonplace. Bark, waste from the wood

industry, from roadside maintenance and from land-

scaping, as well as agricultural waste such as straw or

palm fibres serve as fuel. Although the composition

of biomass is extremely heterogeneous, all materials

have one thing in common: in most cases their water

content must be significantly reduced before they can

be used for energy.

BÜTTNER’S drying systems and energy systems are excellently suited to drying biomass. The technical solutions are as varied as the materials. Depending on the raw material, application and water content involved, BÜTTNER designs, builds and supplies

the right dryer for the job and combines it with a precise-ly matched energy system with robust burners.

In addition to a precisely controlled drying process, an-other important factor for drying biomass is the facility's cost-effectiveness – making use of free waste heat. The materials, often very inhomogeneous, require specific dryer internals and special handling. BÜTTNER'S bio-mass drying systems are designed to be robust and flexible. They can be retrofitted in many different ways – even if the fuel's water content varies from that of the system's original design.

Thanks to the proven combination of drying and energy systems, BÜTTNER'S facilities make an important contri-bution to efficiency across the entire production process. This allows for a highly feasible and cost-effective utili-sation of biomass fuels.

APPLICATIONS


WOOD FLAKES FOR PARTICLE BOARDS

HIGH QUALITY STANDARDS THANKS TO BÜTTNER FLASH TUBE PRE-DRYERS AND DRUM DRYERS

Particle boards have a special place among wood-based

materials. They were traditionally, and are still to this

day, used to a great extent in furniture production.

Chipped waste wood, wood thinnings and recovered

wood are the raw materials used to produce particle

boards in the wood industry. For particle board

production, wood f lakes are glued, sorted according

to size and then pressed; the larger f lakes form the

middle layer and fine f lakes the hard surface.

A uniform moisture level for the flakes used in produc-tion is important for the quality of the particle boards. This is why BÜTTNER'S efficient and high-quality drying systems are in very wide use around the world: our single-pass drum dryers, which are heated directly by flue gas, always ensure that wood flakes have a uniform and optimal moisture content.

BÜTTNER'S various firing systems generate the flue gas used for operating single-pass drum dryers. Wood dust, heavy oil, light oil or natural gas are burned inside spe-cial combustion chambers with combination burners or muffle burners. Alternatively, grate firing systems are also employed to burn chipped biomass products such as waste wood, bark or particle board scraps.

Flash tube pre-dryers upstream of drum dryers are used for wood with high moisture content. These dryers dra-matically reduce the moisture content of the wood with-in seconds, before the dried goods reach their final moisture level in the drum dryer.

Steam-heated dryers are preferred when utilised in combination with cogeneration (combined heat and power or CHP). Here either the tube bundle dryers (rotary dryers) or the tube drum dryers are used. Both types of dryers are indirectly heated with turbine exhaust steam and are therefore an excellent complement to a cogeneration system's heat utilisation.

BÜTTNER ensures optimally dried materials for particle board production with smooth interaction between burner system, flash tube pre-dryer and single-pass drum dryer.

Our systems have proven themselves worldwide at countless facilities in the wood industry.

APPLICATIONS


FUEL PRODUCTION WITH BÜTTNER ENERGY SYSTEMS AND SINGLE-PASS DRUM DRYERS

Wood pellets are popular as fuel for private homes and

industrial firing systems. The rod-like pellets are pro-

duced mainly out of wood wastes from saw and plan-

ing mills, as well as from debarked and shredded logs.

BÜTTNER'S drying systems ensure that wood chips are

dried efficiently with energy savings in mind and at

the required moisture level before they are made into

pellets.

Both small and large flakes must have a constant level of moisture before being pressed into the ring die or flat die presses; operations would otherwise be disrupted. For this reason, BÜTTNER provides single-pass drum dryers with a sophisticated control concept: variations in the wood's moisture content are effectively eliminated. With

the highest energy and thermal efficiencies available, BÜTTNER'S drying systems are a proven component for optimal product quality.

Single-pass drum dryers generally utilise flue gas from the grate-firing of chipped biomass products such as waste wood or bark. Steam-heated or hot water-heated tube bundle dryers can also be used in combination with cogeneration (combined heat and power or CHP) for the production of pellets.

BÜTTNER supplies both custom-made drying systems for pellet production and compatible energy systems to customers around the world; combining decades of experience with technical innovation.

FLAKES FOR THE PRODUCTION OF WOOD PELLETS

APPLICATIONS


SINGLE-PASS DRUM DRYERS AND OTHER DRYING SYSTEMS FOR FREE-FLOWING MATERIALS

Free-flowing bulk solids represent very different chal-

lenges to the drying process because of their hetero-

geneous nature. Wood particles, beet pulp and other

biomass products are processed differently from fer-

tiliser, soil, fodder or coal.

Based on decades of experience with a variety of materi-als, BÜTTNER has established a comprehensive spectrum of drying solutions and related thermal energy systems. In addition to a customised drying process for bulk sol-ids, with single-pass drum dryers or tube bundle dryers for example, BÜTTNER also provides solutions to supply the systems with heat when the need arises.

Directly heated single-pass drum dryers lend themselves to drying and conditioning. Flue gas functions as a heat-ing medium and is produced by a variety of firing sys-tems. Special combustion chambers with muffle burners are employed for burning either dust, heavy oil, light oil or natural gas.

Alternatively, grate firing systems are also installed to burn chipped biomass products such as waste wood or bark.

BÜTTNER has developed steam-heated dryers for use with cogeneration systems (CHP). Here, either tube bundle dryers (rotary dryers) or tube drum dryers are up to the task. Both types of dryers are indirectly heated with turbine exhaust steam and thus an excellent com-plement to a cogeneration system's heat utilisation.

The drying systems developed by BÜTTNER for free-flowing bulk goods are designed, manufactured and installed individually for any industrial requirement.

In this way, each material is dried professionally and ef-ficiently. BÜTTNER'S drying solutions have proven them-selves reliable and low-maintenance in global operation.

DRYING OF BULK SOLIDS


APPLICATIONS


SUGAR BEET PULP FOR PRODUCTION OF FODDER

ANIMAL FODDER FROM SUGAR PRODUCTION – DRIED WITH BÜTTNER'S DRYING SYSTEMS

In Central Europe sugar is generally produced from sugar beet, and in the tropics from sugar cane. After waste materials are dried and made into pellets they serve as energy-rich animal fodder. To this end, BÜTTNER supplies f lexible drying and energy systems, which together ensure that the dried pulp has a homogeneous moisture distribution. This is the only way that pellet presses can operate without

interruption.

After cleaning, sugar beet is initially shredded for sugar extraction. The sugar is separated from the beet pulp and impurities are removed. The remains are then cleaned, allowed to concentrate and subsequently crystallised. The remaining beet pulp is first dewatered mechanically and goes into the drum dryers, where it is dried within a short time and then sent off to be pressed into pellets.

In this way, high quality animal fodder is produced from sugar production wastes. BÜTTNER makes an important contribution to the process by supplying coordinated dryer and energy systems. By ensuring a homogeneous drying level, the presses are able to operate efficiently and without interruption.

In tropical regions, waste material from the production of sugar cane accumulates and forms bagasse, which is employed as fuel for process heat generation and also as a part of cogeneration (combined heat and power or CHP). Bagasse is dried in drum dryers or flash tube dryers.

BÜTTNER also supplies efficient and robust drying solutions for this process.


APPLICATIONS


Oil

OilOil

Cyclones

Wet material

Metering screw

Heavy oil & light oil

Natural gas

Atomisation air

Emergency cooling air

Combustion air

Cooling air

Dry materialto production

Exhaust air

Combustion chamber

Burner

Drum

Mixing chamber

SUGAR BEET PULP FOR PRODUCTION OF FODDER



DRYING SYSTEMS

Drum dryers, rotary tube bundle dryers and flash tube dryers: Efficient heating technology can be diverse. BÜTTNER offers the best in drying systems for a range of industrial applications.

The directly heated and the indirectly heated drum dryers are primarily suited to drying wood flakes, OSB strands, biomass products, sugar beet cuttings and bulk solids. Bulk solids are also often dried with the tube bundle dryers.

The powerful flash tube dryer is particularly suited to the production of MDF and to the pre-drying of wood chips.

The dryer systems are heated with the appropriate BÜTTNER burner or energy system.

Plant components are planned and designed by BÜTTNER engineers and comply with the highest international standards. The dryer control in combi-nation with burners and energy systems is fully automatic with state-of- the-art switch systems and its own integrated software without interfaces.

Find out more about the BÜTTNER drying systems



DRYING SYSTEMS


BÜTTNER DIRECTLY HEATED DRUM DRYERS

DRYING SYSTEMS FOR FLAKES, OSB-STRANDS AND OTHER BIOMASS ARE EFFICIENT, VERSATILE AND ROBUST

BÜTTNER'S directly heated drum dryers are distin-

guished by their diverse heating possibilities, effi-

ciency and robustness. This single-pass dryer is used

for drying wood chips, OSB strands, beet pulp as well

as all types of free-f lowing wood material, biomass

products and other bulk solids.

Products to be dried enter the rotating single-pass dryer drum through an air-tight rotary valve. The dryer drum is equipped with specific components, depending on the type of product. This results in an increase in surface area and with it an increase in efficiency.

The product is transported slowly through the dryer drum, by the internals of the dryer drum and the flow of the hot gases. Hot gases from the dryer flow around the product in a continuous current, heat it up and remove the moisture.

After the product has passed through the dryer drum, cyclones separate it from cooled and moist dryer gases. Dependent on the product and systems involved, me-chanical pre-separation with a drop box is also available for use.

At the end of the process, the dried product is discharged from the drying process through an air-tight rotary valve. To make use of the residual heat, dryer gases are partly recycled back into the mixing chamber. The other part is released as exhaust or sent through filter systems and cleaned.

At a glance:

Water evaporation capacity of up to 80 t/h,

depending on the product

Heated directly by multi-fuel burners in combustion chambers

Heated directly by flue gas from energy systems

Heated directly by exhaust gases from turbines or motors

Any combination of these heating methods is possible

For high moisture content levels, a flash tube dryer can be attached to pre-dry and separate coarse materials

Dust extraction takes place by means of cyclones or exhaust air cleaning systems

DRYING SYSTEMS

16 BÜTTNER EXPERTS IN ENERGY AND DRYING WWW.BUETTNER-ENERGY-DRYER.COM 17 16 BÜTTNER EXPERTS IN ENERGY AND DRYING WWW.BUETTNER-ENERGY-DRYER.COM 17

Oil

OilOil

Cyclone

Dump Dry materialto production

Flue gascyclone

Emergency stack Exhaust air

Exhaust air cleaning system

Drum

Wet material

Fresh air

Flue gas fromenergy system

Oil

OilOil



Cyclones

Sanding dust

Heavy oil& light oil

Natural gas

Atomisation air


Combustion air

Cooling air

Exhaust air

Combustion chamber

Burner

Emergency stack

Drum

Wet material

Mixing chamber

Coarsematerial

Pre-dried material

Flash tubepre-dryer

Dischargebox

BÜTTNER DIRECTLY HEATED DRUM DRYERS

DRYING SYSTEMS


BÜTTNER INDIRECTLY HEATED TUBE DRUM DRYERS

INDIRECTLY HEATED DRYING SYSTEMS DESIGNED TO WORK WITH COGENERATION SYSTEMS (CHP)

BÜTTNER'S indirectly heated tube drum dryers are

specifically designed to work in combination with co-

generation systems (CHP). They function as reliable

and efficient dryers for wood f lakes and other finely

dissolved and free-f lowing wood material, biomass

products and bulk solids.

The product to be dried enters through an air-tight rotary valve and into a rotating single-pass dryer drum with the installed tube bundle. The product then flows through the heated tube bundle, which turns with the drum casing and warms the product. The water contained in a product is then evaporated into the dryer air, which is preheated by heat exchangers.

At the end of the dryer drum, the dried product is sepa-rated in a discharge box and discharged through an air-tight rotary valve. Warm and moist dryer air is extracted and dedusted in cyclones or bag filters.

At a glance:

Water evaporation capacity of up to 25 t/h, depending on the product

Heated indirectly by steam, hot water or thermal oil

Application in combination with CHP

Product separated via discharge box

Exhaust air filtering by means of cyclones or bag filter

DRYING SYSTEMS


BÜTTNER INDIRECTLY HEATED ROTARY TUBE BUNDLE DRYERS

DRYING SYSTEMS FOR FLAKES AND BULK SOLIDS – DESIGNED FOR LOWER CAPACITIES IN COMBINATION WITH CHP

BÜTTNER'S indirectly heated rotary tube bundle

dryers are specifically designed to work with co-

generation systems (CHP). They provide reliable and

efficient drying of wood chips and other free-f lowing

wood material, biomass products and bulk solids.

The product to be dried enters a stationary casing with a rotating tube bundle through an air-tight rotary valve. Depending on capacity, the dryer can be used as either a single or double rotary bundle dryer.

The product trickles through the heated tube bundle, which turns inside of the dryer housing, and is heated up. Heating medium and product do not come into direct contact.

The water contained in a product is evaporated into the dryer air, which is preheated by heat exchangers. At the end of the dryer housing the dried product is discharged through an air-tight rotary valve. Warm and moist dryer air is extracted and dedusted in cyclones or bag filters.

Dryer housing with tube bundleHeatexchangers

Wet material

Steam from CHP system

Exhaust air

Dry material to production

Fresh air

Condensate

Condensate to boiler house

Cyclone

At a glance:

Water evaporation capacity of up to 10 t/h, depending on the product

Heated indirectly by steam, hot water or thermal oil

Combined application with CHP

Product discharges directly from the dryer housing

Exhaust air filtering by means of cyclones or bag filter


DRYING SYSTEMS


DRY CHIPS AND FIBRES IN SECONDS – PARTICULARY WITH HIGH MOISTURE CONTENT

BÜTTNER'S f lash tube dryers are highly versatile and

extremely high performance. They are employed for

drying goods with high surface moisture content or

a very high specific surface. They serve, for example,

to pre-dry wood f lakes before the material makes its

way into a drum dryer.

Flash tube dryers are also used as lead dryers for the drying of fibres in medium-density fibreboard production. For many years BÜTTNER'S flash tube dryers have suc-cessfully been in global operation in a variety of industri-al sectors for many years.

Flash tube dryers can be heated in various ways, for example:

by flue gas from a grate-firing system or combustion chamber

by BÜTTNER'S gas line burner by hot gas from a gas turbine or gas motor indirectly through heat exchangers for steam,

hot water or thermal oil indirectly by means of electric heat exchanger by any combination of the heating types mentioned

Flash dryers primarily consist of a duct through which heated dryer air flows. The product to be dried is brought into the dryer and conveyed further by the dryer air. Water evaporates in a matter of seconds.

At the end of the flash tube, the material is separated from the air stream by means of cyclones. If the flash tube dryer is utilised as a pre-dryer, the material is fed into the drum dryer at the end of the process.

At a glance:

Water evaporation capacity of more than 70 t/h per unit, depending on the product

Drying takes place in a few seconds, afterwards the material is separated mechanically or carried through into the attached drum dryer

Single-stage dryer or two-stage dryer

Fresh air dryer or dryer with return air operation

Exhaust air filtering by means of cyclones or exhaust air cleaning systems

BÜTTNER HIGH PERFORMANCE FLASH TUBE DRYERS

DRYING SYSTEMS


Fresh air

Flue gas,turbine exhaust gas


Mixing chamber

Line burner

Cyclone

From refiner:Fibers, water, steam,

resin & chemicals

Steam

Fresh air

Line burner

Condensate

Condensate

Cyclone


From refiner:Fibers, water, steam,

resin & chemicals

BÜTTNER HIGH PERFORMANCE FLASH TUBE DRYERS


DRYING SYSTEMS


HIGH-EFFICIENCY DRUM DRYER

ENERGY SYSTEMS


GRATE FIRING SYSTEM WITH THERMAL OIL HEATER AND DE-ASHING



ENERGY SYSTEMS

The right industrial energy system and technology is vitally important for the processing industry. With the grate-firing system, steam generator and thermal oil heater from BÜTTNER, you are investing in the best in energy technology – depending on whether your aim is to use solid fuel, a range of applications or a wood processing system.

Energy systems with grate-firing can be run with wood, bark, peat, coal or biomass products, for example, while steam generators are operated using thermal oil or flue gas from biomass combustion.

The thermal oil heater primarily provides process heat for the wood pro-cessing industry and is heated with flue gas.

Plant components are planned and designed by BÜTTNER engineers and comply with highest international standards.

Control of the energy systems in combination with dryers and burners is fully automatic with state-of-the-art switch plants and its own integrated software without interfaces.

Find out more about the BÜTTNER energy systems



ENERGY SYSTEMS

ENERGY SYSTEMS FOR SOLID FUELS: CLEAN, VERSATILE, LOW-MAINTENANCE

Grate-firing systems are used very frequently in pro-

cesses involving energy generation with solid fuels.

BÜTTNER'S grate-firing energy systems are individual-

ly customised to the operator's needs and are flexible

when it comes to the fuel needed – whether it be waste

wood, bark, chips, coal, peat or another type of bio-

mass.

Grate-firing systems from BÜTTNER are made to operate continuously and designed with a fully automatic de-ashing system. They allow for fuels with a very high moisture content of up to 150 % to be burned.

The grate surface is adapted to the volume of the com-bustion chamber and thus ensures that the flue gas is clean and burnt off. Numerous technical innovations

increase the profitability of BÜTTNER'S grate-firing systems. One example is that additional flakes or fibres can be blown into the lower combustion chamber. Sanding dust, gas and oil are burned in the upper part of the chamber.

Flue gas from these substances is then utilised to heat thermal oil or generate steam. Thanks to efficient utilization of flue gases in the dryer system, an efficiency level of more than 95% is attainable in the wood based panel industry.

BÜTTNER'S grate-firing systems are reliable and low- maintenance, which results in a high availability. Our combustion systems operate in every climate of the world and demonstrate their high profitability.

At a glance:

Fuels with a moisture content level between 20 to 150 % based on bd

Combustion of waste wood, wooden board wastes (MDF, PB and OSB), bark, wood chips, coal and peat

Air-cooled step grate sized from 12 to 90 m²

Firing capacity from 10 to over 100 MW

Automatic de-ashing system

Graduated air-inlets

Low emissions

Efficiency > 95%

BÜTTNER GRATE-FIRING SYSTEMS


ENERGY SYSTEMS

MDF PROCESS

Mixing chamber

From thermal oil heater

Flue gas to dryer

Flue gascleaning system

Flue gas ID fan

Hydraulic system

Hydraulic system

Wet de-ashing

Water treatment

Steam for consumers

Steam drumFeed water & deaeration tank

Thermal oil heater

Waste water injection

Safety-cooling

Wood chips

Biomass & waste wood

Bark from barking

Sander dust

Trimmings & granulates

Press

Sifter

Short cycle press, impregnation

Building heating

Press

Sifter


Building heating

Emergencystack

Combustionchamber

Fill & drain

Expansion tank

Grate

Secondary air

Primary air

Fuel feeding

Injection

To wet de-ashing

Dust burner

Gas burner

Primary circuit


ENERGY SYSTEMS

BÜTTNER STEAM GENERATORS

PROFITABLE AND SAFE OPERATION WITH EITHER THERMAL OIL OR FLUE GAS

Many branches of industry rely on production methods

utilising process steam. BÜTTNER'S steam generators

supply steam both indirectly with thermal oil and di-

rectly with flue gas produced from biomass combustion

– safe, reliable steam for diverse applications, custom-

ised to meet the individual needs of each facility.

For the construction of its steam generators, BÜTTNER uses its experience in steam boiler construction estab-lished from the end of the 19th century and combines this with modern technology, guaranteeing safe and profitable facility operations.

At a glance:

Steam capacity of over 40 t/h

Indirect steam generation with thermal oil

Direct steam generation with flue gas from biomass combustion

Defibrators or refiners, wax smelters, sifters and heating for buildings are just some of the applications for steam generators

Design, construction, assembly and inspection of steam generators in compliance with EN, ASME or GOST norms

ENERGY SYSTEMS


INDIRECT STEAM GENERATOR

For indirect heating, steam is generated with thermal oil. The steam generator consists primarily of a pressure tank with a coil through which the thermal oil flows. The feedwater pump moves feedwater into the pressure tank, where it is heated until it boils and the water-steam mixture is then separated. The separated steam then makes its way to the consumers. Indirect steam generation is utilised for saturated steam.

DIRECT HEATING

For the direct method, steam is produced directly from flue gas combustion. Here the steam generator consists mainly of a preheater (economiser), an evaporator and a steam drum. The feedwater pump carries feedwater through the preheater and into the steam drum. From there the water flows through the downpipes to the evaporator, where part of the feedwater is turned into steam. The water-steam mixture is injected through riser tubes and into the steam drum, where it is separated. Afterwards, the separated steam is sent out to the consumers. The difference in the density between cold and hot water drives the stream of water and steam from the steam drum down to the evaporator and then up to the steam drum again (natural circulation).

BÜTTNER STEAM GENERATORS


PROCESS HEAT FOR THE WOOD-PROCESSING INDUSTRY AND OTHER INDUSTRIES

Thermal systems are used in countless production

methods and a variety of industries require thermal oil

to transport process heat. BÜTTNER'S proven thermal

oil heaters are heated with flue gas and operate as a

single-pass system.

For thermal oil heaters, the boiler system serves to heat the oil, using the heat generated from the flue gas. The thermal oil, in forced circulation, is directed into the inlet headers on the convection boilers and flows through meandering, curved coils and the adjoining radiation heat exchanger. Sub-flows are brought together again in the outlet header.

Soot blowers automatically clean deposits from the heat-er's convection boiler. The cleaning system's deployment and operating frequency is carried out depending on the level of contamination. The entire quantity of flue gas is sucked through the heater by a fan placed behind the convection boiler.

In the thermal oil circulation cycle, multiple temperature gauges and safety switches monitor the oil temperature. The primary cycle pumps keep the quantity of the circu-lating thermal oil constant in all operating conditions. They carry the thermal oil from the distributor to the heater and then back to the distributor. In case of a power failure, an emergency pump takes over the circu-lation of the thermal oil and directs it over an emergen-cy cooler.

At a glance:

Capacities up to more than 40 MW

Single-pass thermal oil heaters, heated with flue gas

Robust design with high availability

Automatic cleaning of convection system with soot blowers (steam or pressurised air)

Fully automatic de-ashing system

ENERGY SYSTEMS

BÜTTNER THERMAL OIL HEATERS


Wet de-ashing

Hydraulic system

Hydraulic system

Thermal oil heater

Waste water injection

Safety-cooling

Wood chips

Biomass & waste wood

Bark from barking

Sander dust

Trimmings & granulates

Press

Sifter


Building heating

Press

Sifter


Building heating

Emergencystack

Combustionchamber

Mixing chamber

Fill & drain

Expansion tank

Grate

Secondary air

Primary air

Fuel feeding

Injection

From thermal oil heater

Dryer return air

Hot air to dryer

To wet de-ashing

Dust burner

Gas burner

Primary circuit

ENERGY SYSTEMS

PARTICLE BOARD OR OSB PROCESS



BURNERS

Whether it is the combination burner, multi-fuel burner or line burner: BÜTTNER has the right industry burner for the required industrial process – for the wood-based panel industry, for example, or the sugar industry, pellet industry, cement industry and many other industrial sectors.

The BCB combination burner system burns dust, oil and gas individually or in combination in order to produce flue gas. The multi-fuel burners generally heat drum dryers and energy systems.

When used efficiently, type BLB line burners produce heated gas, which is used to heat drying systems. They are run using natural gas or LPG.

All of BÜTTNER'S burners are extremely robust, safe and low-maintenance.

Components of the plants are planned and designed by BÜTTNER engineers and comply with the highest international quality standards.

Control of the burners is fully automatic, with state-of-the-art switch plants and their integrated software without interfaces.

Find out more about the BÜTTNER burner systems



BURNERS


BÜTTNER TYPE BCB MULTI-FUEL BURNERS

COMBINED OPERATION: COMBUSTION OF DUST, OIL AND GAS

BÜTTNER also supplies the type BCB burner system for just one type of fuel (Dust, gas or oil).

The combination BCB burner system from BÜTTNER

functions as a flue gas generator for diverse industri-

al processes. Multi-fuel burners are commonly used to

heat drum dryers.

BÜTTNER'S multi-fuel burners are capable all-rounders and burn sander dust, screen dust and gaseous or liquid fuels.

BÜTTNER'S combination burners make reliable, profitable and low-emission facility operations possible thanks to a flexible combination of combustion methods. BÜTTNER'S burner systems are each specially designed to meet the demands of the individual customer.

Depending on the design, the burners have a gas train, an oil pump and metering station, as well as a dust metering and conveyor station. The entire operation is fully auto-matic, including adjustments to the optimal air-fuel ratio, and regulated electronically depending on the load requirement.

The entire system, including all main and auxiliary units and all components for the feeding, regulation, and metering of fuel, meets the most current technical safety requirements. In particular, this concerns the flame mon-itoring system, which employs type tested UV and IR flame sensors.

At a glance:

Capacities from 5 MW to more than 80 MW

Dust fuels: Sander dust, screen dust, coal dust

Gaseous fuels: Natural gas, Liquid gas LPG

Liquid fuels: Heavy oil, Light oil

Turn down ratio up to 1:10

Low-emission combustion

Sander dust

Heavy oil & light oil

Natural gas

Atomisation air


Combustion air

Cooling air

Combustionchamber

Burner

BURNERS


THE MECHANICS OF OUR COMBINATION BURNERS

Ring gap for dust output, an even distribution of dust thanks to BÜTTNER'S patented rectifier unit

Adjustable swirl air intake – the length and width of the flame can be adjusted depending on dust quality

and the dimensions of the combustion chamber

Dust metering without cleaning interval

Numerous metering screws for a uniform material discharge

Gas train and safety systems, completely installed, wired and tested to ensure no leaks are present

Oil train with pre-heating station, pumping station and metering station

CONTROLLING OUR COMBINATION BURNERS

The amount of air combustion is measured and given in nm³ (pressure and temperature correction)

Lambda oxygen sensor (control of combustion air amount according to actual amount of fuel)

Unlimited number of adjustment curves – to ensure that varying fuels and conditions at the facility

can be addressed

Controlled by means of a PLC with display (no black boxes)

Minimisation of production downtimes: if dust is unavailable, the burner automatically switches

to operate from gas or oil

BÜTTNER TYPE BCB MULTI-FUEL BURNERS


BURNERS


BÜTTNER TYPE BLB GAS LINE BURNERS

HOT GAS GENERATION FOR DIRECTLY HEATED DRYING SYSTEMS

Hot gases are needed for various industrial process-

es, particularly for the direct heating drying systems.

BÜTTNER'S line burners are designed to produce hot

gas robustly and efficiently and operate on natural gas.

They have proven themselves worldwide in the wood-

based panel industry, the cement industry, in mill

construction and at many other industrial facilities.

BÜTTNER'S line burners are extremely robust, safe and

low-maintenance.

BÜTTNER'S line burner, or BLB, consists of so-called

ramps, which are assembled from individual modules

and pre-installed in a piece of the duct. The ramps, which

can be turned on and off individually, are supplied with

fuel via sub channels. In this way, control ranges of 1:20

or beyond are possible. The scope of delivery includes

the pre-mounted gas train as well as the sub channels

with all safety-relevant armatures.

BÜTTNER'S gas line burners are characterised by an especially maintenance-friendly design and low cost replacement parts. The electrodes can be replaced and the flame detectors adjusted from the outside, while

mixing plates, nozzles and modules are individually replaceable.

At a glance:

Output range from 0,8 MW up to more than 48 MW Easy to service modular construction

The burner ramps can be fitted with multiple gas sub channels, which can be shut off individually. This allows for a very broad control range of 1:20

Very slight pressure loss throughout the burner (approximately 2 mbar) means energy savings of over 50 %

The mixing device is specially designed to allow for exhaust gas with a very low pollutant level, whilst simultaneously cooling the components effectively

Very high flame stability

Vacuum and pressure operation possible

Ignition takes place electronically for each ramp – a separate ignition torch is not needed

Flame monitoring by means of a

UV flame detector for each ramp

BURNERS


BÜTTNER TYPE BLB GAS LINE BURNERS



SERVICES

No matter what requirements you may have, we want to exceed them. Whether you order single components or a turn-key drying plant: We guarantee you a first-class service from the planning to handover and professional customer support.

We guarantee you fast and easy processing for the total life time of your plant. Worldwide.

Our commitment and quality awareness strengthen our long-standing customer relationships.

Find out more about the BÜTTNER service features



SERVICES

INSTALLATION AND COMMISSIONING

OUR ENGINEERS – ACTIVE WORLDWIDE IN THE ASSEMBLY OF DRYING AND ENERGY SYSTEMS

Drying systems and energy systems from BÜTTNER are

delivered in individual parts or assembly groups and

are later installed on site and commissioned.

Because the quality of these operations is important for the functionality and performance of the facility, we have our own installation supervisors and engineers for the assembly and commissioning. They assemble the facility in accordance with the contract and bring it into operation on time.

Together with customer's future operating personnel, the facility is started up and further optimised. During this time, the customer's personnel are trained at the loca-tion. At the end of the process the final acceptance test is carried out, which demonstrates the contractually agreed characteristics of the facility.

BÜTTNER also offers a full installation service with experienced specialists.


SERVICES

INSPECTION AND MODERNISATION

BÜTTNER'S drying systems and energy systems are

incredibly durable investments that simultaneously

operate in a high-load environment. They are designed

to operate for decades and to run reliably on a perma-

nent basis over this time.

To keep our systems running reliably and at the highest efficiency, even after a long time in operation, they must be maintained. Our experts take a closer look at the systems and make recommendations in terms of wear and tear and other damage and suggest possible modernisations.

Modernisation work and modifications always have to conform to the existing infrastructure and space avail-

able. For this reason, the company conducting the in-spections requires a great deal of practical experience and know-how.

BÜTTNER has been producing steam boilers and drying systems since the 19th century and combines expertise gained from this long tradition with technical innovation.

For this reason, we don't just offer inspections and modernisation measures for our own systems, but for other company's fabrications as well. For this task in particular, BÜTTNER views the interaction between energy systems and dryers as a systems solution.

PROTECT YOUR INVESTMENT WITH LONG-TERM SAFEGUARDS FOR SYSTEM QUALITY


SERVICES

This has allowed us to develop our know-how, which

allows us to offer service and replacement parts for

drying and energy systems, even for those of other

manufacturers.

We supply spare parts globally for our own machines and facilities. We also supply spare parts for the dryer, burner and energy systems of other suppliers.

We provide spare parts, particularly for equipment supplied by the following companies:

Babcock BSH Pesch Bison Sunds Defibrator Fläkt Texpan

Metso Valmet Overhoff & Altmeyer

CONTACT US:

[email protected]

BÜTTNER Energie- und Trocknungstechnik GmbH Siempelkampstraße 75 D-47803 KrefeldPhone +49 2151 448-0 Fax +49 2151 448-310

Branch office Hanover: BÜTTNER Energie- und Trocknungstechnik GmbH Lohweg 8 D-30559 Hannover Phone +49 511 58979-0 Fax +49 511 58979-377

BÜTTNER COMBINES YEARS OF TECHNICAL EXPERTISE IN FACILITY CONSTRUCTION WITH A HIGH LEVEL OF INNOVATION

SPARE PARTS


BÜTTNER is a company of the Siempelkamp Group.

Branch office Hanover: Lohweg 8

D-30559 Hannover Phone +49 511 58979-0

Fax +49 511 58979-377

[email protected]

Siempelkampstraße 75

D-47803 Krefeld Phone +49 2151 448-0

Fax +49 2151 448-310

[email protected]

www.buettner-energy-dryer.com

Documents

EXPERTS IN ENERGY AND DRYING · the grate-firing of chipped biomass products such as waste wood or bark. Steam-heated or hot water-heated tube bundle dryers can also be used in combination